You can login using:
the URL of your provider (e.g., me.yahoo.com or myopenid.com),
a mnemonic URL (e.g., me.yahoo.com/johnsmith), or
an anonymized URL (e.g., me.yahoo.com/4k8gq2g9hnt5lg).
OpenID protects your secret authentication information (e.g., your password) from this site.